318388812 has 48 divisors (see below), whose sum is σ = 850359552. Its totient is φ = 90826560.

The previous prime is 318388799. The next prime is 318388841. The reversal of 318388812 is 218883813.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58987 + ... + 64157.

It is an arithmetic number, because the mean of its divisors is an integer number (17715824).

Almost surely, 2^318388812 is an apocalyptic number.

It is an amenable number.

318388812 is an abundant number, since it is smaller than the sum of its proper divisors (531970740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

318388812 is a wasteful number, since it uses less digits than its factorization.

318388812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5918 (or 5916 counting only the distinct ones).

The product of its digits is 73728, while the sum is 42.

The square root of 318388812 is about 17843.4529169665. The cubic root of 318388812 is about 682.8404913237.

The spelling of 318388812 in words is "three hundred eighteen million, three hundred eighty-eight thousand, eight hundred twelve".